DTC33: Power Supply Low
- Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Disconnect Air Bag Control Unit (ACU) connector. Turn ignition on. Measure voltage between ground and terminal No. 5 (White/Green wire) of ACU connector. See Fig 1. If battery voltage is present, go to step 3. If battery voltage is not present, go to next step.
- Trace and repair open circuit between terminal No. 5 (White/Green wire) of ACU and battery. See WIRING DIAGRAMS . Go to next step.
- Check for continuity between terminal No. 6 (Black wire) of ACU connector and ground. If continuity exists, replace ACU. See AIR BAG CONTROL UNIT (ACU) under REMOVAL & INSTALLATION. If continuity does not exist, replace harness between terminal No. 6 (Black wire) of ACU connector and ground.
Courtesy of KIA MOTORS AMERICA, INC.